v3.26.1
Form N-1A Cover
Oct. 31, 2025
Prospectus [Line Items]  
Document Type 497
Amendment Flag false
Registrant Name LEGG MASON PARTNERS INVESTMENT TRUST
Entity Central Index Key 0000880366
Entity Investment Company Type N-1A
Document Period End Date Oct. 31, 2025
Prospectus Date Mar. 01, 2026